Concrete mixer



Nov. lil, 1930. v v. PHSPANEN CONCRETE MIXER Filed Jan. 3Q, 1950 I Suunto@ I Y piispannwf m Patented Nov. 11, 1930v camo STATES PATENT omen vINo PIISPANEN, OE HELsINKI, FINLAND, Ass'IofNo'n' TOHKOEHRING COMPANY, OE

MILWAUKEE, WISCONSIN, A CORPORATION CONCRETE MIXER Application mea January 3o, 1930, Serial No. 424,638, and in Finland May 22, 1929.

The present invention comprises a novel construction of mixing machine, primarily designed for the admixture of concrete, and involving new and peculiar means for supf 5 porting the mixing drum of the machine in order to facilitate the movement of said drum from a mixing position to a dumping posi-y tion, and vice versa. v

In carrying out the invention, the especial 1o novel feature of the construction resides in mounting themixingdrum so that it rotates about a shaft, and is supported at one side of the kdrum only. The shaftwhichvcarries the drum is of peculiar bent formation, so

as to lenable the drum to have the necessary movement(v for assuming'4 its mixing and dumping positions. 4 a

rIhe construction of the present mixing machine is designedalso for the utmost simplicity and cheapness of manufacture obtained by the employment of relatively few parts advantageously combined and arranged.

In the accompanying drawings Figure l is a perspective view of one embodiment of the invention in practical form.

Figure 2 is a sectional View taken about on a horizontal plane through the drum and supporting standard.

Describing this invention specifically, and referring to the drawings, as to exemplifica- Vtion thereof, the numeral l denotes the mix- .ing drum itself, the same arranged to rotate freely upon the shaft 2 by the provision of a central journal member la in the form of Ul A casting of somewhat bell shape which cast.

ing constitutes the central supported portion of the drum l, combining with the body of the drum to provide a suitable receptacle for ,the concrete which receptacle or drum is open at one end only, somewhat after the manner of tilting or tumbler type mixers at present in use.

The shaft 2 is bent or of angular form, one I end of arm of the shaft entering the journal portion la of the drum and the other end being mounted for rotation in the bearing members 6 and 7 extending laterally from the upper horizontal arm 5 of a supporting standard l2 at the lower end of which is a supporting base 13 of T-foi'm. The shaft 2 may be rotated in the lbearings Gland 7 aforesaid, by means of a lever 8.,: VIVhen so rotated, the movement of the shaft 2 will shift thedrum so thatits openend raises'or lowers, lower! ing in order to dump, and assuming a raised oruppermostposition whenit is desired to `mix the aggregates or vconcrete materials.

In this way,` the drum-,may quickly emp-` tied or liftedto its mixing position. j

For the rotation of the drum 1'in'orderto perform its mixing functiom'there is pro-V A,vided a bevelv gear 3 rotatively mounted upon one end of the shaft 2 and meshingwith bevel gear teeth of a gear ring 4 formed onrthe body ofa drum and carried directly bythe central casting at the end of the latter op-,f po'site the openend of the drum. Attached or4 formedwith the bevelgear 3 is ahandle extensionrQcarrying the crank handle `9A by the gear 3 may be `turned in order to Y `impart ,rot-ation to the drum 1.

v)As a convenient means for locking the drum l in itsfmix'ing position, a latch meinberl4 is mounted on a side of the horizontal arm of the standard 12 and the'nose of the latch member is adaptedto engage over Vthe lever or handleS by which the drum l is rocled frfcausing it to assume dumping or mixing positions. The handleB is carried byy a collar 8? pinned at v8" to the shaft 2Q AI he body of the drum l isl preferably'of sheetumetal riveted or otherwise securedto the 'central casting having the journal mem berl l?. Moving the handle 8 rocks the Idrum in an'. obviousmanner. The shaft 2 is provided with a stopv ring 10 anda protecting hoodllatmthe free end of the journal member l?. The drum is equippedinteriorly with the .usual mixing blades` not shown. v k

IIaving thus described my invention, what Iclaimv as newfand desire to secure by Letters Patent of the United States, is

l.l concrete mixing machine, comprising a drum open at one end, and yclosed at its other end, a support, an angular shaft rotatable u'p'onthe support and supportedat one end by the support, means connecting the oth'eruend of the shaft with the mixing drum, and means formoving the shaft to turn the loe drum from mixing to discharging position, together vWithmeans for rotatingthe drum relatively tothe s hait.

2. A concrete mixing machine, comprising a mixing drum closed at one end and open -atfits other end, a journal memberat the closed end of the drum, Va support,a shaft of angular form mounted at one end upon the support and having its otherend cooperative With the journal member ofthe drum, means carried by the drum for turning 'fit With the shaft to `shift the drum 'from 'mixing to dumping position and vice versa, means on Vthesupport geared to the'drum for rotating the drum relatively tothe shaft, and a lock deviceV cooperating to hold the `drum in a predetermined position.v Y

3. Atilting drum type concrete mixer, com-k prising a supporting standard, a drum mount f ingmeans carried by said standard including j va relatively horizontal portion having adrum supporting portion extending at an angle from theend thereof so that When thefdr'um v c supporting portion extends at one angle relay tively to the horizontal portion a drum carried therebyvwill assume a non-discharging position, -Whereas when the angililarly. ex-

tending drum supporting portionl ispturned l Y at another angle relatively to the. horizontal portion :and with said horizontal portion as anaxis, the drum carried thereby vvillr be in discharging position, a drinn mounted upon said drum supporting portion,- 'and devices loiyturniiig the drum about the axis formed by 4the angularly extending drum supporti ing means and 'for' turningl the mounting means about ythe axis .providedby the-horicausing non-discharging and discharging adi v n justinents of the drum representing different inclinations thereof.

A. tilting drum type concrete mixer comi Y prising a supportin standard, `drum mountingineans carried y the standard and including a vhorizontal shaft portion to rotate on the standard and an angularly extending Y drum supporting portion projecting from an end of the said horizontal shaft portion, a drum mounted upon said angularly extending portion andv tree to rotate relatively thereto, a gear carried bythe drum and -cothe angularly extending'portion of the said i horizontal shaft so as to change its inclination to opposite positions in one yof'vvhich it` Will hold the drum 'for dischargingaction, and inthe other of which it Will hold 'th drum forfnonfdischarging action.

`6. `A concre e mixer as set forth ao j in claim 5,V

ywherein the lastmentioned meansy is a lever Y connected to'rotate the drum with thehorizontal shaft portion 'as the turning axis, and

latch vmeans yassociated lWithr the drum turning 'means for normally holding the drum in! a non-discharging upwardly'finclined po si tion.

' 'In testimonyV whereof I'afiixmy signature. Y 'j zontal portioirthereofso as to Vcause non-v discharging or discharging inclinations A.to be assumed by the drum. j 1 j 4.' Atilting drum type concrete mixer, comprising a vsupporting standard, Ya drum I mounting means carried by said standard including a relatively horizontal-portion'li aving a drum` supporting portion extending Vatan vangle from the endthereof so that When the drum supjgiorting` portion extends at -one angle relatively to the horizontal portion a drum'carried thereby will assume a non-dischargingposition, Whereas'Wh'enthe angu-V larly extending drum supporting .portionis turned at another angle relatively to the horizontal yportion and With said horizontal 'portionas an Vaxis, the drum'carriedjthereby will bein discharging position, ay drum ,mounted upon-said'druin supporting portion,

a gear carried by th'edrum and having the angularly extending portion of the mounting means coaxial therewith, and a gear `carried by thek horizontal portion of vthe V,mountingmeans andV meshing with the gear. on'theA dr'um,jtogether With means "for turning 'the second mentioned gear for causingrotation*V of the drum, and means for turning the hori- .zontaly portion of the. mountingmeans for izo Y ico 

